针对我国20 世纪五六十年代建设的大量水库在运行几十年后不同程度地出现了水质污染,且较点源污染、面源污染,内源污染更加隐蔽且难以控制的问题,总结了近年来国内外内源污染的研究成果,从污染物的入库来源、出库途径和蓄积影响因素3 个方面探讨了水库内源污染迅速形成的原因,分析了内源污染对水库水质的作用和影响.指出研发适应性的样本采集设备,对内源污染物进出库情况和分布状态进行监测,解析内源污染源汇机制与效应,以及研究与应用内源污染综合治理技术是该领域今后的研究热点方向.
Varying degrees of water pollution have been found in lots of reservoirs built between the 1950s and 1960s in China after operation for several decades. Compared with point-source pollution and non-point source pollution, internal pollution is more difficult to find and control. Based on review of worldwide research on internal pollution, the cause of rapid formation of internal pollution of reservoirs is discussed from three aspects:the source, the discharge routes, and the factors of accumulation of pollutants. The impacts of internal pollution on the water quality of reservoirs are analyzed. It is pointed out that adaptive samplers, monitoring of internal pollutant transport in and out of reservoirs, distribution of pollutants, the sink-source mechanism of internal pollution, and internal pollution treatment technology should be further studied.